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Re: dual mot tc (fwd)

To: tesla@xxxxxxxxxx
Subject: Re: dual mot tc (fwd)
From: "Tesla list" <tesla@xxxxxxxxxx>
Date: Mon, 8 Oct 2007 21:30:01 -0600 (MDT)
Delivered-to: testla@xxxxxxxxxx
Delivered-to: tesla@xxxxxxxxxxxxxxxx
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Resent-date: Mon, 8 Oct 2007 21:30:02 -0600 (MDT)
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---------- Forwarded message ----------
Date: Mon, 8 Oct 2007 11:43:02 -0700 (PDT)
From: G Hunter <dogbrain_39560@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: dual mot tc (fwd)

No problem.  Glass bottles and NSTs go together well. 
12oz (355ml) beer bottles are good for 750-900pF each.
 A 6-pack is worth roughly 5nF.  A 12-pack will get
you 10nF.  These can stand up to any NST, including
the 15kv units.  For a "dry" cap, try wrapping the
bottles in kitchen foil.  You can stick it on with
spray glue.  Just roll the bottle up in foil, then
smooth it down using the back of a big spoon.

I've assembled caps like this as big as 80nF

http://hot-streamer.com/greg/bottle.htm

and gotten satisfactory performance from them.  They
are not in the same league as a commercial plastic
film pulse cap, but they are very inexpensive.

Cheers,

Greg

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Sun, 7 Oct 2007 13:40:06 -0700
> From: Clive Hansen <mrclivehansen@xxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: dual mot tc (fwd)
> 
> I think I have decided to possibly steer away from
> the mots and instead use
> an nst because of the lower output current for
> safety. Does anyone see this
> causing problems with the previously mentioned
> capacitor setup?
> 
> On 10/7/07, Clive Hansen <mrclivehansen@xxxxxxxxx>
> wrote:
> >
> > Okay, from what I can gather several glass bottles
> filled with brine with
> > copper tubes inside them sitting a container
> filled with brine would
> > probably work the best for what I have access to.
> That is probably what I
> > will go with then.
> >
> > On 10/6/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> > >
> > >
> > > ---------- Forwarded message ----------
> > > Date: Sat, 6 Oct 2007 16:49:04 +1000
> > > From: A. Wang 2007 T476202
> <tangara_02@xxxxxxxxxxx>
> > > To: Tesla list < tesla@xxxxxxxxxx>
> > > Subject: RE: dual mot tc (fwd)
> > >
> > >
> > > Sounds fine to me, though you might need a few
> for a decent tank
> > > capacitance value. That's something I need to
> try making meself. If you
> > > can, it is slightly more preferable to try to
> get a commercial pulse
> > > capacitor, MMC, or doorknobs. But otherwise
> bottle capacitors work
> > > better
> > > than some other commercial capacitors.
> > >
> > > Good luck with your coil,
> > >
> > > A.Wang 2007
> > >
>
_____________________________________________________________
> > >
> > > "If you do nothing, nothing will go wrong"
> > >
> > > Bean- The Ultimate Disaster Movie
> > >
> > > > Date: Fri, 5 Oct 2007 11:17:38 -0600
> > > > From: tesla@xxxxxxxxxx
> > > > To: tesla@xxxxxxxxxx
> > > > Subject: Re: dual mot tc (fwd)
> > > >
> > > >
> > > > ---------- Forwarded message ----------
> > > > Date: Fri, 5 Oct 2007 07:37:05 -0700
> > > > From: Clive Hansen < mrclivehansen@xxxxxxxxx>
> > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > Subject: Re: dual mot tc (fwd)
> > > >
> > > > I think I will be using caps made from a 2
> liter plastic bottle filled
> > > with
> > > > salt water with a copper pipe suspended in it
> and tin foil covering
> > > the
> > > > outside of the bottle. Does anyone think that
> this would work
> > > acceptably?
> > > >
> > > > On 10/4/07, Tesla list < tesla@xxxxxxxxxx>
> wrote:
> > > > >
> > > > >
> > > > > ---------- Forwarded message ----------
> > > > > Date: Fri, 5 Oct 2007 15:12:30 +1000
> > > > > From: A. Wang 2007 T476202 <
> tangara_02@xxxxxxxxxxx>
> > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > Subject: RE: dual mot tc (fwd)
> > > > >
> > > > >
> > > > > Don't even bother thinking about the MO
> caps. They have high losses
> > > at
> > > > > 500Hz-ish, let alone RF. If you can, get
> some tinfoil and projector
> > > > > slides, and you can build a plate capacitor.
> Otherwise, your plan is
> > > > > pretty much fine as i see it. I went with a
> MOT coil myself.
> > > > >
> > > > > A.Wang 2007
> > > > >
>
_____________________________________________________________
> > > > >
> > > > > "If you do nothing, nothing will go wrong"
> > > > >
> > > > > Bean- The Ultimate Disaster Movie
> > > > >
> > > > > > Date: Thu, 4 Oct 2007 22:43:27 -0600
> > > > > > From: tesla@xxxxxxxxxx
> > > > > > To: tesla@xxxxxxxxxx
> > > > > > Subject: RE: dual mot tc (fwd)
> > > > > >
> > > > > >
> > > > > > ---------- Forwarded message ----------
> > > > > > Date: Fri, 5 Oct 2007 00:32:40 -0400
> > > > > > From: Scott Bogard <
> teslas-intern@xxxxxxxxxxx>
> > > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > > Subject: RE: dual mot tc (fwd)
> > > > > >
> > > > > >
> > > > > > Clive,
> > > > > >      A few suggestions, wire your MOTs in
> series/anti-parallel
> > > > > > configuration, this means have the two MOT
> cores wired together
> > > with a
> > > > > > ground (like a center tap grounded NST)
> and wire the primaries in
> > > > > > parallel.  If you cannot draw any arcs
> between the two HV outs,
> > > then
> > > > > > reverse polarity of only one of MOT
> primaries.  1/4 cu tubing is
> > > fine.
> > > > > > The advantage of this is that the MOTs are
> working at their
> > > ordinary
> > > > > > voltage ratings, and oil is not necessary
> (they also run quieter
> > > this
> > > > > way,
> > > > > > as their noise cancels each other out,
> kind of cool).  18AWG wire
> > > is
> > > > > kind
> > > > > > of big, unless you plan on building a big
> secondary, like 12-in
> > > > > diameter,
> > > > > > (I assume you plan on using 18 AWG "magnet
> wire" correct?).  Three
> > > > > segment
> > > > > > spark gap should be fine if designed
> properly, I cannot help you
> > > there,
> > > > > > never had good luck with multi-segment
> gaps, I went strait to a
> > > rotary
> > > > > > gap.  You cannot use MO caps for a tank
> cap, they will be terribly
> > >
> > > > > > inefficient, and I've read about them
> blowing up in TC use (you
> > > cannot
> > > > > > believe everything you read however,
> perhaps someone on the list
> > > can
> > > > > > verify or discredit this).  Your best bet
> would be a proper MMC
> > > with CD
> > > > > > caps, or if you are really strapped for
> funds (like me), you could
> > > build
> > > > > a
> > > > > > cap the old fashioned way, check the
> archives if you are
> > > interested.  I
> > > > > > hope this helps, good luck. Scott Bogard.
> > > > > >
> > > > > > > Date: Thu, 4 Oct 2007 20:39:01 -0600
> > > > > > > From: tesla@xxxxxxxxxx
> > > > > > > To: tesla@xxxxxxxxxx
> > > > > > > Subject: dual mot tc (fwd)
> > > > > > >
> > > > > > >
> > > > > > > ---------- Forwarded message ----------
> > > > > > > Date: Thu, 4 Oct 2007 17:13:47 -0700
> > > > > > > From: Clive Hansen
> <mrclivehansen@xxxxxxxxx>
> > > > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > > > Subject: dual mot tc
> > > > > > >
> > > > > > > Hello,
> > > > > > >      I am thinking of building a coil
> using two mots in series
> > > under
> > > > > oil
> > > > > > > with an inductive ballast to limit
> current. For a tank cap, I
> > > want to
> > > > > use
> > > > > > > two or three microwave oven caps in
> series. My spark gap will be
> > > a
> > > > > three
> > > > > > > segment gap quenched by a leaf blower. I
> want to use 1/4in
> > > copper
> > > > > piping for
> > > > > > > the primary and 18 gauge wire for the
> secondary. I must use
> > > microwave
> > > > > oven
> > > > > > > parts because they are very cheap. If
> anyone sees any problems
> > > with
> > > > > this
> > > > > > > setup please let me know.
> > > > > > >
> > > > > > > Thanks,
> > > > > > > Clive
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
>
_________________________________________________________________
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> > > > > >
> > > > >
> > > > >
>
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> > > > >
> > > >
> > > >
> > >
> > >
>
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> >
> 
> 
> 



       
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